CN105441075B - A kind of barium pyrophosphate titanium fluorescent material and preparation method thereof - Google Patents
A kind of barium pyrophosphate titanium fluorescent material and preparation method thereof Download PDFInfo
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- CN105441075B CN105441075B CN201510928899.8A CN201510928899A CN105441075B CN 105441075 B CN105441075 B CN 105441075B CN 201510928899 A CN201510928899 A CN 201510928899A CN 105441075 B CN105441075 B CN 105441075B
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- 239000000463 material Substances 0.000 title claims abstract description 38
- SUUTXLRTEKZOJV-UHFFFAOYSA-J barium(2+) phosphonato phosphate titanium(4+) Chemical compound [O-]P([O-])(=O)OP(=O)([O-])[O-].[Ti+4].[Ba+2] SUUTXLRTEKZOJV-UHFFFAOYSA-J 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 13
- RCUAPGYXYWSYKO-UHFFFAOYSA-J barium(2+);phosphonato phosphate Chemical compound [Ba+2].[Ba+2].[O-]P([O-])(=O)OP([O-])([O-])=O RCUAPGYXYWSYKO-UHFFFAOYSA-J 0.000 claims abstract description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000000576 coating method Methods 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 19
- 239000011248 coating agent Substances 0.000 claims description 17
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims description 10
- 239000002243 precursor Substances 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 229910001632 barium fluoride Inorganic materials 0.000 claims description 2
- 241000209094 Oryza Species 0.000 claims 2
- 235000007164 Oryza sativa Nutrition 0.000 claims 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims 2
- 235000009566 rice Nutrition 0.000 claims 2
- 230000004907 flux Effects 0.000 claims 1
- 238000010792 warming Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 4
- QOOFYEMVDOWCIZ-UHFFFAOYSA-K [Sn+4].P(=O)([O-])([O-])[O-].[Mg+2].[Sr+2] Chemical compound [Sn+4].P(=O)([O-])([O-])[O-].[Mg+2].[Sr+2] QOOFYEMVDOWCIZ-UHFFFAOYSA-K 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 230000008021 deposition Effects 0.000 abstract description 2
- 238000000295 emission spectrum Methods 0.000 abstract description 2
- 239000011812 mixed powder Substances 0.000 abstract description 2
- 238000001228 spectrum Methods 0.000 abstract description 2
- 239000003086 colorant Substances 0.000 description 4
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- IWOUKMZUPDVPGQ-UHFFFAOYSA-N barium nitrate Inorganic materials [Ba+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O IWOUKMZUPDVPGQ-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- -1 magnesium aluminates Chemical class 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- DJZHPOJZOWHJPP-UHFFFAOYSA-N magnesium;dioxido(dioxo)tungsten Chemical compound [Mg+2].[O-][W]([O-])(=O)=O DJZHPOJZOWHJPP-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/70—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus
- C09K11/71—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing phosphorus also containing alkaline earth metals
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
The invention discloses a kind of barium pyrophosphate titanium fluorescent material and preparation method thereof, chemical composition is：Ba2P2O7:nTiO2, also disclose the preparation method of this fluorescent material.The emission spectrum of the fluorescent material of the present invention is broadband emission, and scope covers all light of half-breadth 170nm near 490nm wavelength blue light, and luminous efficiency is high, half-peak is wide, stable chemical performance.In addition, the MODEL OF THE PHOSPHOR PARTICLE SIZE of the present invention is adjustable, by controlling deposition condition to change the particle size of presoma, the particle diameter of final finished can adjust in 4 μm~30 μm sections.The fluorescent material of the present invention coordinates strontium phosphate magnesium tin and other fluorescent material to use, and can reach full spectrum after manufactured mixed powder lamp shows.
Description
Technical field
The present invention relates to rare earth luminescent material field, in particular to a kind of barium pyrophosphate titanium fluorescent material and its preparation
Method.
Background technology
After the 1950s, fluorescent lamp mostly uses calcium halophosphate activated by antimony andmanganese, is commonly called as halogen powder.Halogen powder is cheap, but luminous
Efficiency is not high enough, and heat endurance is poor, and light decay is larger, and lux maintenance is low, and therefore, it is not suitable for slim pipe diameter compact fluorescent lamp
In.
1974, Dutch Philip had been succeeded in developing first can send the glimmering of the red, green, blue three coloured light of human eye sensitivity
Light powder yittrium oxide (glowing, peak wavelength 611nm), more magnesium aluminates (green light, peak wavelength 541nm) and more magnesium aluminates
Barium (blue light-emitting, peak wavelength 450nm) is mixed into three primary colors fluorescent powder by a certain percentage, and (complete name is the base of rare earth element three
Color fluorescent material), its luminous efficiency is high (average light efficiency is in more than 80lm/W, about the 5 of incandescent lamp times), colour temperature 2500K-
6500K, colour rendering index is 85 or so, and the energy can be greatlyd save by making the raw material of fluorescent lamp with it, and here it is efficient energy-saving fluorescent lamp
Cause.It can be said that the exploitation of rare earth element three primary colors fluorescent powder and the important mileage that application is in fluorescent lamp development history
Upright stone tablet.There is no three primary colors fluorescent powder, it is then not possible to have today of slim pipe diameter compact high efficiency energy saving fluorescent lamp of new generation.But rare earth member
Plain three primary colors fluorescent powder also has its shortcoming, and its disadvantage is exactly expensive.
Barium pyrophosphate titanium is excited by the shortwave long discharge of ultraviolet, can be used in fluorescent lamp.The face that it is sent
Color is similar to the color that magnesium tungstate is sent.Apparent barium pyrophosphate titanium fluorescent material is white powder, is excited in 253.7nm ultraviolets
Issue blue and white fluorescence, peak wavelength 490nm or so, 170 ± 5nm of half width, chromaticity coordinates x=0.260 ± 0.01, y=0.335
±0.005.The strontium phosphate magnesium tin that can arrange in pairs or groups uses, applied to height colour developing, high quality lighting field.
The content of the invention
It is an object of the present invention to provide a kind of blue emission, luminous efficiency is high, half-peak is wide, stable chemical performance
Barium pyrophosphate titanium fluorescent material.
The technical solution adopted in the present invention is as follows：
A kind of barium pyrophosphate titanium fluorescent material, it is characterised in that its chemical general formula is：Ba2P2O7:nTiO2, wherein：0.1≤n
≤0.9。
It is a further object of the invention to provide a kind of preparation method of barium pyrophosphate titanium fluorescent material, comprise the following steps：
1) chemical general formula BaHPO is pressed4Stoichiometric proportion weigh Ba (NO3)2, (NH4)2HPO4, wherein (NH4)2HPO4It is excessive
5~20%, by Ba (NO3)2It is dissolved in pure water, controlled concentration is in 0.2~0.5mol/L, and temperature is between 35~60 DEG C；By (NH4)2HPO4It is dissolved in pure water, controlled concentration is in 2.5~4mol/L, and temperature is between 35~60 DEG C；
2) Ba (NO that will have been configured3)2Solution is maintained at 35~60 DEG C and under quick stirring, at the uniform velocity adds step
(the NH of rapid 1) middle configuration4)2HPO4Solution, feed time are 5~60min；35~60 DEG C of keeping temperature continues stirring 0.5 afterwards
~2h, after stopping stirring, 35~60 DEG C of keeping temperature, 0.5~6h is stood, is precipitated；
3) precipitation for obtaining step 2) poured out 80~250 eye mesh screens, then with pure water, will be deposited in 120~180
DEG C drying and dewatering, the precipitation of drying 80~250 eye mesh screens, obtain Ba2P2O7:nTiO2Precursor B aHPO4；
4) according to chemical formula Ba2P2O7:nTiO2Stoichiometric proportion weigh precursor B aHPO made from step 3)4With
TiO2, fluxing agent is added, mixture is made, mixture is placed in mixing tank, adds batch mixing ball, is well mixed；
5) mixture in step 4) by mixing is placed in air atmosphere, 4~8h is incubated in 1000~1040 DEG C；It is cold
But to taking out after 25~30 DEG C, 20~80 eye mesh screens is crossed, adds water to stir into slurry and crosses 400 eye mesh screens, be washed to the μ s/ of conductance≤50
cm；
6) toward addition pure water and nano aluminium oxide coating in the slurry of step 5), 5% ammoniacal liquor and 5% hydrochloric acid is used to adjust PH
To 9.0~9.3,0.5~3h is stirred, disposed slurry has been stirred and has crossed 250 eye mesh screens, the μ s/cm of washing conductance≤50, at 120~180 DEG C
Drying and dewatering, cross 160 eye mesh screens and obtain a kind of barium pyrophosphate titanium fluorescent material.
Further, described precursor B aHPO4The μ s/cm of final washing conductance≤100.
Further, the fluxing agent described in step 2) is BaF2, percentage by weight is 0.5~2.5%.
Further, the granularity of the TiO2 described in step 2) is 20~100nm.
Further, the nano aluminium oxide coating described in step 6) is 1~2%wt nano-alumina solution.
Further, the weight ratio of the nano aluminium oxide coating described in step 6) and powder is 1~6:20.
Nano aluminium oxide coating refers to the nano aluminium oxide that certain a certain amount of concentration is added in the fluorescent powder paste material of stirring
Solution, the particle diameter of fluorescent material are adsorbed in fluorescent powder grain in micron level, the particle diameter of nano aluminium oxide in Nano grade very solution
On surface, layer protective layer is formed, is also diaphragm, the technique is also coating process, has used nano aluminium oxide to carry out coating, just
It is nano aluminium oxide coating process, the other materials such as nano yttrium oxide or nano silicon can be selected as needed during coating
Carrying out coating can also.Coating is big to some light decays, the fluorescent material of poor chemical stability, can play a part of stability property, together
The agglomeration of Shi Gaishan fluorescent material, make the dispersiveness raising of fluorescent material, improve the apparent density of fluorescent material, pipe is being applied to fluorescent material
When paintability also have improvement, but the addition of nano aluminium oxide can not be too many, and no person can reduce the brightness of fluorescent material.
To improve the covered effect of nano aluminium oxide, typically PH can be adjusted in coating, the purpose for adjusting PH is to adjust solution
Current potential, the electric nuclear energy that takes of phosphor surface is set enough preferably to adsorb nano aluminium oxide.Coating is added again by fluorescent material finished product
Water is tuned into slurry and carrys out coating, direct when can also wash the qualified preparation drying storage of conductance in fluorescent material, but not dry also
Add water to be tuned into slurry and carry out coating, can so save one of stoving process.The coating that " nano aluminium oxide coating " technique uses
Agent is certain mass percentage concentration " nano-alumina solution ".
The invention has the advantages that：
(1) emission spectrum of fluorescent material of the invention is broadband emission, and scope covers 490nm wavelength blue light half-breadth nearby
170nm all light；
(2) phosphor emission blue light of the invention, luminous efficiency is high, half-peak is wide, stable chemical performance；
(3) MODEL OF THE PHOSPHOR PARTICLE SIZE of the invention is adjustable, by controlling deposition condition to change the particle size of presoma, finally into
The particle diameter of product can adjust in 4 μm~30 μm sections；
(4) fluorescent material of the invention coordinates strontium phosphate magnesium tin and other fluorescent material to use, energy after manufactured mixed powder lamp
Reach full spectrum to show.
Brief description of the drawings
Fig. 1 is the (Ba of fluorescent material product embodiments 1 of the present invention2P2O7:0.8TiO2) launching light spectrogram；
Fig. 2 is SEM (SEM) photo of the embodiment of the present invention 1.
Embodiment
With reference to specific embodiment, the present invention is described further：
Embodiment 1
1) chemical general formula BaHPO is pressed4Stoichiometric proportion weigh Ba (NO3)2, (NH4)2HPO4, wherein (NH4)2HPO4It is excessive
5%.Ba (NO3)2It is dissolved in pure water, controlled concentration is in 0.25mol/L, and temperature is at 40 DEG C.(NH4)2HPO4Pure water is dissolved in, is controlled
Concentration processed is in 3.5mol/L, and temperature is at 40 DEG C.0.25mol/L Ba(NO3)240 DEG C of solution keeping temperature and quick stirring
Under, add temperature 40 DEG C of concentration 3.5mol/L (NH4)2HPO4Solution, at the uniform velocity add solution, feed time 10 minutes.Add
Complete (NH4)2HPO4Solution, 40 DEG C of keeping temperature continues to stir 1h, and after stopping stirring, precipitation is stood 4h by 40 DEG C of keeping temperature.Will
Precipitation poured out 160 eye mesh screens, with the μ s/cm of pure water to conductance≤100, will precipitation dehydration in 180 DEG C of drying, drying it is heavy
Formed sediment 250 eye mesh screens, obtains Ba2P2O7:0.8TiO2Precursor B aHPO4；
2) according to chemical formula Ba2P2O7:0.8TiO2Stoichiometric proportion weigh step 1) preparation precursor B aHPO4With
TiO2, TiO2Particle diameter is 20nm；Add the BaF of 0.5% parts by weight2, mixture is made, mixture is placed in mixing tank,
Batch mixing ball is added, is well mixed；
3) mixture in step 2) by mixing is placed in air atmosphere, 9h is incubated in 1010 DEG C；It is cooled to 28 DEG C
After take out, cross 60 eye mesh screens, add water to stir into slurry and cross 400 eye mesh screens, be washed to the μ s/cm of conductance≤50.It is (dry by 1000g powders
Weight after dry), 6L pure water, 50ml 1% nano-alumina solution ratio, add into washing conductance≤50 μ s/cm slurry
Enter pure water and 1% nano-alumina solution, adjust PH=9.2 using 5% ammoniacal liquor and 5% hydrochloric acid, stir 3h, stirred disposed slurry
Cross 250 eye mesh screens, the μ s/cm of washing conductance≤50, be dehydrated in 120 DEG C of drying, cross 160 eye mesh screens and obtain barium pyrophosphate titanium fluorescence
Powder.
Embodiment 2
1) chemical general formula BaHPO is pressed4Stoichiometric proportion weigh Ba (NO3)2, (NH4)2HPO4, wherein (NH4)2HPO4It is excessive
5%.Ba (NO3)2It is dissolved in pure water, controlled concentration is in 0.25mol/L, and temperature is at 45 DEG C.(NH4)2HPO4Pure water is dissolved in, is controlled
Concentration is in 3.5mol/L, and temperature is at 42 DEG C.0.25mol/L Ba(NO3)2Under 40 DEG C of solution keeping temperature and quick stirring,
Add temperature 40 DEG C of concentration 3.5mol/L (NH4)2HPO4Solution, at the uniform velocity add solution, feed time 8 minutes.Add
(NH4)2HPO4Solution, 40 DEG C of keeping temperature continues to stir 1h, and after stopping stirring, precipitation is stood 5h by 40 DEG C of keeping temperature.Will be heavy
160 eye mesh screens were poured out in shallow lake, with the μ s/cm of pure water to conductance≤50, will precipitation dehydration in 170 DEG C of drying, the precipitation of drying
250 eye mesh screens are crossed, obtain Ba2P2O7:0.8TiO2Precursor B aHPO4；
2) according to chemical formula Ba2P2O7:0.8TiO2Stoichiometric proportion weigh step 1) preparation precursor B aHPO4With
TiO2, TiO2Particle diameter is 20nm；Add the BaF of 0.5% parts by weight2, mixture is made, mixture is placed in mixing tank,
Batch mixing ball is added, is well mixed；
3) mixture in step 2) by mixing is placed in air atmosphere, 9h is incubated in 1010 DEG C；It is cooled to 26 DEG C
After take out, cross 60 eye mesh screens, add water to stir into slurry and cross 400 eye mesh screens, be washed to the μ s/cm of conductance≤50.It is (dry by 1000g powders
Weight after dry), 6L pure water, 50ml 1% nano-alumina solution ratio, add into washing conductance≤50 μ s/cm slurry
Enter pure water and 1% nano-alumina solution, adjust PH=9.2 using 5% ammoniacal liquor and 5% hydrochloric acid, stir 3h, stirred disposed slurry
Cross 250 eye mesh screens, the μ s/cm of washing conductance≤50, be dehydrated in 120 DEG C of drying, cross 160 eye mesh screens and obtain barium pyrophosphate titanium fluorescence
Powder.
Claims (6)
1. a kind of preparation method of barium pyrophosphate titanium fluorescent material, it is characterised in that comprise the following steps：
1) chemical general formula BaHPO is pressed4Stoichiometric proportion weigh Ba (NO3)2, (NH4)2HPO4, wherein (NH4)2HPO4Excessive 5~
20%, by Ba (NO3)2It is dissolved in pure water, controlled concentration is in 0.2~0.5mol/L, and temperature is between 35~60 DEG C；By (NH4)2HPO4
It is dissolved in pure water, controlled concentration is in 2.5~4mol/L, and temperature is between 35~60 DEG C；
2) Ba (NO that will have been configured3)2Solution is maintained at 35~60 DEG C and under quick stirring, at the uniform velocity adds step 1)
(the NH of middle configuration4)2HPO4Solution, feed time are 5~60min；35~60 DEG C of keeping temperature continues 0.5~2h of stirring afterwards,
After stopping stirring, 35~60 DEG C of keeping temperature, 0.5~6h is stood, is precipitated；
3) precipitation for obtaining step 2) poured out 80~250 eye mesh screens, then with pure water, will be deposited in 120~180 DEG C of bakings
Dry dehydration, the precipitation of drying 80~250 eye mesh screens, obtain Ba2P2O7:nTiO2Precursor B aHPO4；
4) according to chemical formula Ba2P2O7:nTiO2Stoichiometric proportion weigh precursor B aHPO made from step 3)4And TiO2, then
Fluxing agent is added, mixture is made, mixture is placed in mixing tank, adds batch mixing ball, is well mixed；
5) mixture in step 4) by mixing is placed in air atmosphere, 4~8h is incubated after being warming up to 1000~1040 DEG C；
Taken out after being cooled to 25~30 DEG C, cross 20~80 eye mesh screens, add water to stir into slurry and cross 400 eye mesh screens, be washed to the μ s/ of conductance≤50
cm；
6) toward adding pure water and nano aluminium oxide coating in the slurry of step 5), using 5% ammoniacal liquor and 5% hydrochloric acid adjust PH to
9.0~9.3,0.5~3h is stirred, disposed slurry has been stirred and has crossed 250 eye mesh screens, the μ s/cm of washing conductance≤50, in 120~180 DEG C of bakings
Dry dehydration, cross 160 eye mesh screens and obtain a kind of barium pyrophosphate titanium fluorescent material；
The chemical general formula of wherein described barium pyrophosphate titanium fluorescent material is：Ba2P2O7:nTiO2, wherein：0.1≤n≤0.9.
2. the preparation method of barium pyrophosphate titanium fluorescent material according to claim 1, it is characterised in that before described in step 3)
Drive body BaHPO4The μ s/cm of final washing conductance≤100.
3. the preparation method of barium pyrophosphate titanium fluorescent material according to claim 1, it is characterised in that helping described in step 4)
Flux is BaF2, percentage by weight is 0.5~2.5%.
4. the preparation method of barium pyrophosphate titanium fluorescent material according to claim 1, it is characterised in that described in step 4)
TiO2Granularity be 20~100nm.
5. the preparation method of barium pyrophosphate titanium fluorescent material according to claim 1, it is characterised in that receiving described in step 6)
The nano-alumina solution that rice aluminum oxide coating is 1~2%wt.
6. the preparation method of barium pyrophosphate titanium fluorescent material according to claim 1, it is characterised in that receiving described in step 6)
The weight ratio of rice aluminum oxide coating and powder is 1~6:20.
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| Title |
|---|
| The System BaO-TiO2-P2O5: Phase Relations, Fluorescence, and Phosphor Preparation;D. E. Harrison;《Journal of the Electrochemical Society》;19600331;217-221 * |
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| CN105441075A (en) | 2016-03-30 |
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